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Bezzdna [24]
3 years ago
12

The study of the evolution and the mind using principles of natural selection is evolution

Physics
1 answer:
Rus_ich [418]3 years ago
4 0
this is evolutionary psychology
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What is the momentum of a 0.2kg ball with a speed of 5 m/s
Eddi Din [679]
Momentum

= mass x velocity

= 0.2 x 5

= 1 kg m/s
3 0
3 years ago
What is the speed of a skater who travels a distance of 210 m in a time of 10 seconds?
Klio2033 [76]

21m per second. Take 210 divided by 10. Hope this helps!

7 0
3 years ago
Alan slides across home plate during a baseball game. If he has a mass of 61
andrew11 [14]

Answer:

D. 371 N

Explanation:

Friction force equals normal force times the coefficient of friction:

F = Nμ

Since the ground is level, normal force equals weight:

N = mg

Therefore:

F = mgμ

F = (61 kg) (9.8 m/s²) (0.62)

F = 371 N

7 0
3 years ago
Read 2 more answers
When a user wants to participate in a PKI, what component does he or she need to obtain, and how does that happen?
Luba_88 [7]

Answer: certificate authority

Explanation: The user submits Identification data and certificate request to the registration authority (RA). The RA validates this information and sends the certificate request to the certificate Authority (CA)

5 0
3 years ago
If an otherwise empty pressure cooker is filled with air of room temperature and then placed on a hot stove, what would be the m
Xelga [282]

Answer:

The magnitude of the net force F₁₂₀ on the lid when the air inside the cooker has been heated to 120 °C is \frac{135.9}{A}N

Explanation:

Here we have

Initial temperature of air T₁ = 20 °C = ‪293.15 K

Final temperature of air T₁ = 120 °C = 393.15 K

Initial pressure P₁ = 1 atm = ‪101325 Pa

Final pressure P₂ = Required

Area = A

Therefore we have for the pressure cooker, the volume is constant that is does not change

By Chales law

P₁/T₁ = P₂/T₂

P₂ = T₂×P₁/T₁ = 393.15 K× (‪101325 Pa/‪293.15 K) = ‭135,889.22 Pa

∴ P₂ = 135.88922 KPa = 135.9 kPa

Where Force = \frac{Pressure}{Area} we have

Force = F_{120}=\frac{135.9}{A}N.

4 0
3 years ago
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